Tracing in Illustrator is a great way to create a replica of an image or object. The process is simple and can be done with a few simple steps. There are a few different tools that can be used for tracing, but the simplest is the Pen Tool. To start tracing, first select the object or image that you want to copy.
Next, use the Pen Tool to create a straight line from the top left corner of the object to the bottom right corner. Once the line is created, hold down the Alt (Option on the Mac) key and drag the line downwards to create a copy of the object. You can also use the Pen Tool to create shapes, like circles or squares, by pressing the Shift key while drawing the line. To finish tracing the object, simply release the Alt (Option on the Mac) key and the object will be copied.